https://www.selleckchem.com/products/jnj-64619178.html To explore the views of those in later life on the usability of a smartphone application (app) which could assist in negotiating the external environment, particularly during extreme weather and local environmental changes. Seven adults aged over 55years (four women, three men) living in Sydney, Australia, participated in focus groups. Responses were analysed thematically. The findings demonstrate older adults would use a reliable and relevant app to assist in accessing their external environment if it could provide assistance with accurate, up-to-date transport options, road closures, community events and weather. If relevant, in real time and locally focussed adults aged over 55 could find value in a mobile app to assist them to navigate their external environment. These results suggest an age-friendly, specifically designed app will have an impact on accessibility to the local environment with the potential to lead to increased walking and social engagement. If relevant, in real time and locally focussed adults aged over 55 could find value in a mobile app to assist them to navigate their external environment. These results suggest an age-friendly, specifically designed app will have an impact on accessibility to the local environment with the potential to lead to increased walking and social engagement. In this systematic review and meta-analysis, we aimed to evaluate the prevalence of dementia in patients with COVID-19 and its association with mortality. We also aimed to discover whether age, sex and other comorbidities might affect the association between dementia and mortality. We carried out a systematic literature search using PubMed, SCOPUS, EuropePMC and the Cochrane Central Database. The outcome of interest was mortality, defined as clinically validated mortality/death/non-survivor in the studies. The pooled effect estimates were presented as odds ratio and adjusted odds ratio. A total of 56 577 pati